Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth(Figure 1) : An oak barrel with a lid of area 0.17m2 is filled with water. Along, thin tube of cross-sectional area 5.3*10^(-5)m2 is inserted into a hole at the center of the lid, and water is poured into the tube. When the water reaches 12 m high, the barrel bursts.
Part A What was the weight of the water in the tube?
Part B What was the pressure of the water on the lid of the barrel?
Part C What was the net force on the lid due to the water pressure?